Which method is characterized by a complete takeover of physiological functions?

The method characterized by a complete takeover of physiological functions is known as performance. In this context, performance refers to actions or interventions where health care professionals or medical devices fully take over a function of the body that is otherwise impaired or not functioning on its own. This can include scenarios such as a ventilator providing all the necessary breaths for a patient who cannot breathe independently.

To clarify the other methods: monitoring involves observing and recording physiological functions without intervening or taking over, while support refers to providing assistance or enhancing the body’s functions without completely taking them over. Partial assistance means that some functions may still be performed by the patient, while others are supported or enhanced by an intervention. These distinctions are significant in determining the appropriate coding in ICD-10-PCS, as they define the level of intervention and the extent to which physiological functions are replaced or replicated.